EP 0812394 A1 19971217 - DYNAMIC GROOVE BEARING WITH V-SHAPED OIL BARRIER GROOVE
Title (en)
DYNAMIC GROOVE BEARING WITH V-SHAPED OIL BARRIER GROOVE
Title (de)
DYNAMISCHES RILLENLAGER MIT V-FÖRMIGER ÖLSPERRE
Title (fr)
PALIER A RAINURES DYNAMIQUES A SILLON EN V FORMANT BARRIERE D'HUILE
Publication
Application
Priority
- EP 96938429 A 19961204
- EP 95203614 A 19951222
- IB 9601345 W 19961204
Abstract (en)
[origin: WO9723735A1] A dynamic groove bearing (9, 89, 111) with an inner bearing part (15) and an outer bearing part (17) which is rotatable about the inner bearing part (15). The bearing parts (15, 17) are provided with cooperating bearing surfaces (23, 35) between which a bearing gap (45) filled with liquid lubricant (75, 105) is present. The bearing surface (35) of at least one of the bearing parts (17) is provided with a pattern of grooves (51, 53). The bearing surface (35) of the outer bearing part (17) is provided with an annular recess (67, 91, 113) which bounds the bearing gap (45). The annular recess (67, 91, 113) prevents leakage of the liquid lubricant (75, 105) from the bearing gap (45) at comparatively high speeds of the dynamic groove bearing (9, 89, 111). The dynamic groove bearing (9, 89, 111) can be used in an electric motor (1, 87, 109) of a data storage unit (121) in which an information disc (123) such as, for example, a hard disk of a computer, is rotatable relative to a scanning unit (129) with a magnetic head (131) by means of the electric motor (1, 87, 109).
IPC 1-7
IPC 8 full level
F16C 17/10 (2006.01); F16C 33/10 (2006.01); H02K 5/16 (2006.01); H02K 5/167 (2006.01)
CPC (source: EP US)
F16C 17/107 (2013.01 - EP US); F16C 33/107 (2013.01 - EP US); H02K 7/086 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9723735 A1 19970703; DE 69615162 D1 20011018; DE 69615162 T2 20020627; EP 0812394 A1 19971217; EP 0812394 B1 20010912; JP 3933692 B2 20070620; JP H11501112 A 19990126; MY 132542 A 20071031; US 5765952 A 19980616
DOCDB simple family (application)
IB 9601345 W 19961204; DE 69615162 T 19961204; EP 96938429 A 19961204; JP 52346697 A 19961204; MY PI19965414 A 19961220; US 76289396 A 19961210